Spine board



FIG. 1 is a top plan of a spine board showing our new design;

FIG. 2 is an edge view thereof, as seen from the right edge in FIG. 1; the other edge is a mirror image of the edge shown;

FIG. 3 is a bottom plan thereof;

FIG. 4 is an end view thereof, as seen from the upper end in FIG. 1; and,

FIG. 5 is an end view thereof, as seen from the other end. 

The ornamental design for a spine board, as shown and described. 